Internally-lubricated leaf spring



INTERNALLY LUBRICATED LEF SPRING Filed OCL. 6, 1922v and connected by ahole 15 with the grooves 9 in each leaf 8, whereby lubricant would flowby gravity throughout the entire length and breadth of each leafcontacting face. An outlet plug 16 is arranged adjacent the lower endsof the lower leaf of the upper .spring'l communicating with the interiorthereof for drawing off excess or waste dirty lubricant.

The leaves 8 of the lower spring are provided with grooves, the same asdescribed in spring 1, on the upper facesv thereof. `Spring 2 dill'ersfrom As ringvlvin that the oil cups` 14 are arrange adjacent theopposite ends of the sprint,r (rather than in the middle of thespring)-the oil flowing by gravity to the low point and thence beingdistributed tlirough the ports 16 into the oilgrooves of the nextadjacent spring leaf.

Ztl-In thespring 2 the vdischarge plugs 16 are positioned ysubstantially intermediate the spring ends'.

, Fig. 7 shows a modified form of the invention ca able of adaptation toa conventional 35 type o spring. In this construction the oil' carryinggrooves would be arranged on either the upper or lower faces of thespring the holes ifi register ith lhe grooves ol an adjacent leal' a\\afrom the ends lhereol' in order to coincide will: the form ol'i grooveshown and deseribed in Figs. l through t3.

Having thus` dreerihed this invention what I elaim and desire lo secureby Letters latent is:

A spring, comprising, a plurality of sla'ekcd leal' members eaeh olIwhich has a lubricant passage alongl one. l'aee thereof and an aperturecommunicating and rcgislering with the passage ol" the next adjacentleal member; a sruu'ee ot lubricant supply connected with said passages;a lubricant retaining means interposed between said pas sage and thesides of said spring; means to draw ofi' excess lubrieant 'from saidafssages; and means for holding said stac ed leaf members together.

In testimony whereof, I have hereunto set my hand at San Francisco,California, 16th day of September, 1922.

ROBERT BERKELEY

